Intruder alert! Exterminate??

I'm 99+% certain 'tis one of the Solanaceae. Right in the middle of the Sarcococca.

Question is ... whence cometh it? No doubt it was bird assisted, but I'm at a loss as to where the nearest wild one is. I know where there's a tame one, I think I'll see what the flowers are like before I pass judgement and exterminate/transplant.

BTW Ignore the dandelion, it's no longer viable.